Radioisotope batteries

Researchers at the University Of Missouri are working on a new battery that will utilize a liquid semiconductor that is more resistant from the attacks by radioactive elements. Conventional batteries use solid semiconductors that are not as resistant. The researchers believe that their battery has the potential to make a phone charge last a couple of months.
Jae Kwon, a assistant professor of electrical and computer engineering at U.of M. said the battery can provide power density that is six orders of magnitude higher than chemical batteries(a million times the charge of a normal battery).
Problems to be overcome in its development is the size of the battery, which of course needs to be small to fit the many consumer devices that it will be used. The prototype is the thickness of a penny, but the researchers still want to reduce the size and test other materials to improve the battery. Kwon believes that the final product that will be used in commercial gadgets can be thinner than a human hair. The research team has a provisional patent.